Climate models outputs, particularly the reanalysis datasets, output wind speeds as zonal and meridional averages for the modelled time period (typically 1, 3 or 6 hours). So we get a 2-dimensional ...

I have heard that extreme storm events can be caused simply by a butterfly flapping its wings somewhere in a distant location. Is it true that such a small disturbance in the air in one location can ...

What is the accepted methodology to predict future climatic extremes using the results of climate models?
I have recently read a report about climatic extremes considering climate change (MICE, 2002)....

In reading the question What would the geology and climate of a supposed landmass near the pole be like, assuming a thoroughly warmer planet?, it came to mind that another factor may cause a shift in ...

This question is related to and extension of my previous question which was about the methodology used to predict future climatic extremes:
What is the methodology to analyze future climatic extremes ...

I am sure there are different methodologies to arrive at such a number. Can someone in layman terms describe some of the most widely used and trusted methods and what data are used? Sorry I am outside ...

Cloud forcing is still one of the major uncertainties of radiative forcing in climate modeling because there are so many uncertainties in it (and parametrizations). But also because the timescale of ...

A quick skim of the regional chapters in AR5 shows predicted changes to average temperature and precipitation. If I understand (in rough terms) the modelling methodologies used, a variety of models (...

There's a story going around the low-grade news factories that one Dr. David Evans has predicted that the world will start cooling down in 2017. One source reports:
He says fundamental flaws in how ...

Plant Functional Types (PFTs) are a discretisation of global vegetation types. They are used in land surface models to parametrise many values, including albedo, various photosynthesis parameters, and ...

This very basic question occurred to me during a talk on reanalysis data sets. Often we know the observations produced by a particular instrument, say rain radar, are biased from one year to the next ...

I have just begun reading some notes about modelling and can't seem to understand what a 1°x1° grid or a 2.5° grid or 1/4° grid is. I know it is something related to the resolution of the area over ...

I want to analyze climate projection data for the different RCPs for a region in north western India, which has an arid climate. I chose MPI-ESM data downscaled with CORDEX. An example filename looks ...

Is it generally understood that we (globally) have been living in an RCP8.5 scenario over the past 7-8 years?
Such that a predictive climate model using RCP8.5 assumptions that was run circa 2011 can ...

I would like to calculate the latitude values of a Gaussian Grid of a size of my choosing. Unfortunately, I didn't find a method or a formula to do so. Where can I find this information? Alternatively,...

If you examine the detailed temperature records that form the basis for our understanding of global warming, there are some strange anomalies (at least from a naive point of view where warming affects ...

I just listened to Ivar Giaever's speech on the climate change, and he raised following points which seem significant to me:
Temperature differences y/y are very small compared to natural
variation ...

Of course atmospheric-ocean-coupled global climate models are, by their nature, very strong on ocean-atmosphere interaction, but what about large lakes? Lake Victoria in East Africa, the N American ...

The concept of 'return period' (= 'average recurrence interval', or ARI) is widely used in hydrology, and to a much lesser extent in geology, geomorphology, geophysics, etc. Whatever the application, ...

"All models are wrong but some are useful". I am not against the concept of anthropogenic climate change because climate models may not be strong source of information for climate change. Observation ...

I was wondering if anyone here is familiar with temperature and precipitation estimation?
I need to estimate P and T from April to July 2016. I am planning to use excel to do the calculation because ...

Ten years ago I studied the third report of the Intergovernmental Panel on Climate Change with some friends. I remember a bit of a hedge in the report, to the effect that general circulation models ...